Originally Posted by RussB
i always thought the simplified explanation of caster was something like this:
less caster = more low speed steering / less high speed
more caster = more high speed steering / less low speed
Basically, there is noe simplified explanation to this, as it all depends on your other settings.
Caster means your wheels will be cambered the same direction when you turn. That means initially you have only a small part of the tire gripping the surface, but as your car leans over it will straighten up the wheels and it will grip more midturn. But by running a car that is too stiff, that just won't happen.
How the effect of more and less caster will be, also depends on your camber settings.